Read Panasonic CQ-JA1920L / CQ-JA1924L Service Manual online
16
TUNE.PUSH
Tune push switch
I
5.0
17
-
No connection
-
-
18-23 D0-5
LCD control data
O
0
24
GND
Ground
-
0
25,26 D6,7
LCD control data
O
0
27
SCAN.LED
SCAN LED on/off
O
10.2
28
P.SCAN.LED
P.SCAN LED on/off
O
10.2
29
RBDS.LED
RBDS LED on/off
O
0
30
RANDOM.LED
RANDOM LED on/off
O
0.4
31
E
LCD driver enable
O
0
32
ILL 1
Illumination control
O
0
33
ILL 2
Illumination control
O
0
34
RESET
LCD reset
O
0
35
RESET
Reset input
I
4.7
36
KI1
Key data
I
0
37
LED.DATA
LED control data
O
0
38
LED.CLK
LED control clock
O
0
39
LED.R.CLK
LED control clock
O
0
40
VDD
+5V power supply
-
5.2
41
X2
Crystal oscillator
-
3.0
42
X1
Crystal oscillator
-
1.7
43
IC
(Connecting to ground)
-
0
44
-
No connection
-
-
45
KI2
Key data
I
0
46
AVSS
Ground
-
0
47
PHOTO.IN
Photo sensor data
I
0
48,49 KO2,1
Key scan
O
0
50-53 KI3-6
Key data
I
0
54
AO
LCD driver select
O
0
55
AVDD
+5V power supply
-
5.2
56
AVREF
+5V power supply
-
5.2
57
PANEL.SI
Serial data for panel
I
5.1
58
PANEL.SO
Serial data for panel
O
0
59
PANEL.CLK
Clock for panel
I
5.0
60,61 KO3,4
Key scan
O
0
62
K-LINE IN
K-line data
I
5.2
63
K-LINE OUT
K-line data
O
5.2
64
KO5
Key scan
O
0
IC612 : YEAMNJU6450G
Pin
No.
Port
Description
I/O
(V)
1,2
COM7,8
LCD common signal
O
0.1
3-10 -
No connection
-
-
11-70 SEG59-0
LCD segment data
O
0.1
71
AO
LCD driver select
I
0
72
OSC1
Oscillator terminal
-
1.9
73
OSC2
Oscillator terminal
-
2.0
74
E
LCD driver enable
I
0
75
R/W
(Connecting to ground)
-
0
76
GND
Ground
-
0
77-84 D0-7
LCD control data
I
0
85
P.ON.5V
+5V power supply
-
4.9
86
RESET
Reset input
I
5.2
87
-
No connection
-
-
88
V5
Reference voltage setting
-
-4.7
89
V3
Reference voltage setting
-
-0.8
90
V2
Reference voltage setting
-
1.1
91
M/S
(Connecting to +5V)
-
4.9
92
V4
Reference voltage setting
-
-2.8
93
V1
Reference voltage setting
-
3.0
94-
100
COM0-6
LCD common signal
O
0.1
9.4. CD Servo Block
IC401 : YEAMCXD2597Q
Pin No.
Port
Description
I/O
(V)
1
SQSO
Sub Q-cord data
O
0.5
2
SQCK
Sub Q-cord read clock
I
4.9
3
XRST
System reset
I
4.9
4
SYSM
Mute input
I
4.9
5
DATA
Serial data
I
3.4
6
XLAT
Serial data latch
I
4.9
7
CLOK
Data shift clock
I
4.0
8
SENS
SENS output
O
0.8
9
SCLK
SENS read clock
I
5.1
10
VDD
+5V power supply
-
4.9
11
ATSK
Anti-shock signal
I/O
0
12
SPOA
(Connecting to ground)
-
0
13
SPOB
(Connecting to ground)
-
0
14
XLON
Access mode selection
O
4.4
15
WFCK
Not used
-
-
16
XUGF
XUGF output
O
0
17
XPCK
XPCK output
O
0
18
GFS
GFS output
O
4.1
19, 20 -
Not ised
-
-
21
COUT
Track count
I/O
0
22
MIRR
Mirror signal
I/O
0
23
DFCT
Defect signal
I/O
0
24
FOK
Focus OK signal
I/O
4.5
25
LOCK
GFS sampling status
I/O
4.5
26
MDP
Spindle motor control
O
2.5
27
SSTP
(Connecting to ground)
-
0
28
SFDR
Sled drive
O
1.1
29
SRDR
Sled drive
O
0
30
TFDR
Tracking drive
O
0
31
TRDR
Tracking drive
O
0
32
FFDR
Focus drive
O
0
33
FRDR
Focus drive
O
0.4
34
VSS
Ground
-
0
35-37 -
(Connecting to ground)
-
0
38
VC
Middle point voltage input
I
2.3
39
FE
Focus error
I
2.6
40
SE
Sled error
I
2.0
41
TE
Tracking error
I
2.2
42
RFDC
RF signal
I
3.2
43
AVSS0
Ground
-
0
44
IGEN
OP-amp constant-current input
I
2.3
45
AVDD0
+5V power supply
-
4.9
46
ASYO
EFM full-swing output
O
1.6
47
ASYI
asymmetrical
comparison
voltage
I
2.6
48
BIAS
asymmetrical constant-current
I
2.4
49
RFAC
EFM signal input
I
2.3
50
AVSS3
Ground
-
0
51
CLTV
VCO1 control voltage
I
2.3
52
FILO
PLL filter
O
0
53
FIFI
PLL filter
I
1.8
54
PC0
PLL charge-pump
O
1.8
55
AVDD3
+5V power supply
-
4.9
56
VCTL
VCO2 control voltage
I
2.4
57
VPCD
EFM PLL charge-pump
O
2.5
58
VSS
Ground
-
0
59
VDD
+5V power supply
-
4.9
60-64 -
Not used
-
-
65
XVDD
Power supply for master clock
-
4.9
66
XTAI
Crystal oscillator
-
1.7
67
XTAO
Crystal oscillator
-
3.9
68
XVSS
Ground
-
0
10
AUDI / CQ-JA1920L / CQ-JA1924L
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